| # Scripts |
|
|
| ## make_clips.py: cut the clips from source videos |
| |
| The dataset contains no audio. `make_clips.py` cuts the clips of the dataset from |
| source videos that you have downloaded yourself, with the same processing that produced |
| the dataset: |
|
|
| 1. decode the audio track to 16 kHz mono 16-bit PCM with ffmpeg |
| (`ffmpeg -vn -ac 1 -ar 16000 -c:a pcm_s16le`); |
| 2. take the samples from `int(start * 16000)` to `int(end * 16000)`; |
| 3. write them as FLAC to `<out-dir>/<audio_input_path>`. |
|
|
| The script does not download videos. The source video of a row is |
| `https://www.youtube.com/watch?v=<video_id>`. |
|
|
| ### Requirements |
|
|
| Python 3.9 or later with `pyarrow` and `soundfile`, and the `ffmpeg` program: |
|
|
| ```bash |
| pip install pyarrow soundfile |
| ``` |
|
|
| ### Usage |
|
|
| Get the dataset rows, for example the Dutch rows of the `asr` split (files `data/asr/nl/`): |
|
|
| ```bash |
| huggingface-cli download meetween/mumospee_v3 --repo-type dataset \ |
| --include "data/asr/nl/*" --local-dir mumospee |
| ``` |
|
|
| Cut the clips of one video: |
|
|
| ```bash |
| python make_clips.py --rows mumospee/data/asr/nl \ |
| --video downloads/-H9G_NHn4Xc.mp4 --out-dir clips |
| ``` |
|
|
| or of all videos in a folder: |
|
|
| ```bash |
| python make_clips.py --rows mumospee/data/asr/nl --videos-dir downloads --out-dir clips |
| ``` |
|
|
| The video ID is read from the file name: `<video_id>.<ext>`, `<video_id>_<anything>.<ext>` |
| or `<anything>[<video_id>].<ext>`; otherwise pass `--video-id`. `--rows` also accepts a |
| CSV or JSON Lines file with the columns `video_id`, `clip_id`, `start`, `end` and |
| `audio_input_path`. |
|
|
| ### Output |
|
|
| ```text |
| clips/ |
| ├── audio/<lang>/<video_id>/<clip_id>.flac one file per clip, at the row's audio_input_path |
| └── make_clips_report.csv video_id, clip_id, status (written / skipped / failed), note |
| ``` |
|
|
| The audio of a row is `clips/<audio_input_path>`. Clips that already exist are skipped, |
| so an interrupted run can be repeated; `--overwrite` rewrites them. |
|
|
| ### Notes |
|
|
| - The clips match the clips the dataset was built from when the downloaded audio is the |
| same as the original. In a test with the original source files, 142 of 144 clips were |
| identical sample by sample, and the other 2 differed by at most one unit in single |
| samples (a rounding difference between ffmpeg versions). |
| - A video downloaded at a different time or in another format can differ slightly from |
| the original, and a video may no longer be available. |
| - If the downloaded audio is shorter than a clip's `end`, the clip is cut at the end of |
| the audio, and the report notes this. |
|
|
